Liquid-raising apparatus



(No Model.)

F. H. MERRILL.

LIQUID RAISING APPARATUS. N0. 533,228. 'Patented Jan. 2Q, 1895.

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FRANK II. MERRILL, OF BOUND BROOK, NEV JERSEY, ASSIGNOR TO THE MERRILLMANUFACTURING COMPANY, OF NEW JERSEY.

LIQUID-RAISING APPARATUS.

'SPECIFICATION forming part of Letters Patent No. 533,228, dated January29, 1895.

Application filed July 31,1894. Serial No. 519,050 (No modell) To allwhom it may concern:

Be it known that I, FRANK H. MERRILL, a citizen ot the United States,and a resident of Bound Brook, in the county of Somerset and State ofNew Jersey, have invented certain new and useful Improvements in Liquid-Raising Apparatus, of which the following is a specification.

The apparatus in which this invention `is embodied is also shown in anapplication led July 13, 1891, Serial No. 399,287, wherein it isgenerically claimed and I therefore in this application do not intend toclaim the features wherein said apparatus is generically allied to theother apparatus shown in said application.

The accompanying Idrawing shows a vertical section of an apparatusembodying my present invention.

a and c are the watercompartments provided with the water entranceopenings b and ZJ which are respectively controlled by the Valves c andc.

CZ 'is the water delivery pipe.

e 1s the passage connecting thev compartment a with the water deliverypipe and conf trolled by the valve f.

e is the passage connecting the compartment a with the water deliverypipe and controlled by the valve f.

g is the compressed air supply pipe..

t is the valve cylinder towhich the compressed air is conducted.

c and vl are pipes by which the compressed airis conducted from thevalve cylinder to the compartments c and a respectively.

y is the main valve which determines vthe flow of the compressed airfrom the pipe g to the pipes i and t" respectively.

k and k' are pipes leading from near the bottoms of the compartments aand a respectively, to the pipe Z.

m and m are upwardly opening check valves at the mouths of the pipes 7cand 7c respectively.

n is an auxiliary chamber into the top of which the pipe Z opens andwhich is provided at the bottom with the openings o o leading into thepipe p which connects with the water delivery pipe d as shown. Theauxiliary chamber n is also provided with an opening Q which leadsthrough the passage r up to the mechanism by which the main valve isoperated.

o is a valve arranged to partially close the openings o. q is a valvearranged to close the passage q. Both the valves o and q are connectedwith the iioat s so that when the iioat s is up the valve q is closed,and when the floatsis down the valve o is nearly closed.

In alignment with the valve cylinder hare the piston cylinder hcontaining the piston j and the piston cylinder h2 containing the pistonjg.

h3 are openings tween valve j and piston j to the open air.

r' is a passage leading from the cylinder h2 to the passage r.

t is a valve chamber for the double conical valve t. This valve chambercommunicates by passages t2 with a chamber t3 in front ofthe piston j2.The piston rod u connects the piston j with the valvej and the pistonrod fu," con nects the piston j with the piston jg. The valve stem a3fits loosely within the piston rod a and is provided on each side offthe valve t with bearings in the frame, as shown.

fu is a spring interposed between the valve t and the frame.

o is a spring connected with the valve stem a3 and arranged to bearagainst the piston j2.

'w and w are minute openings answering to gradually exhaust the air fromboth sides of the piston jg without materially impairing the pressure ofthat air when operating to move the piston.

The operation of the contrivance is as follows: Starting with thecompartment a" full of water, as soon as the main Valve is thrown intothe position shown in thedrawing, the valve c will close, the valve jwill open and the water will be forced out of the compartment a into thedelivery pipe e until it has fallen below the level of the mouth of pipe7c. During all this time the auxiliary chamber n will be filled withwater and the float s raised so as to close the passage q and open thepassage o. Now, however, the air will enter the pipe 7c and passing intothe top of the auxiliary chamber n will force the water therefromthrough the pipe p into the delivery pipe d until there is notsufficient water left to buoy leading from the space bej'65 up the floats whereupon that iioat will fall so as to open the'valve q and partiallyclose the Valve o. Now, the compressed air will pass into the cylinderh2 and the chamber t3 wherein the exposed surfaces of the pistons 9" andy2 are such as to cause the pistons to move to the left and shift themain valvej to the opposite end of its stroke whereby the' pressure isremoved from the pipe t" and transferred to the pipe 7l. As soon as thisis accomplished, the outside water will raise the valve c and till thecompartment a and the compressed air in the pipe fwill begin to forcethe Water out of the compartment aiuto the delivery pipe d and theauxiliary chambern. This will buoy up the iioat s, close the valve q andopen the valve o whereupon the pressure of the air being cut off fromthe left hand side of the valve t and the piston y2 exerting no pressureon the valve'stem through the spring o the spring fu will force valve tto the opposite end of its stroke. The parts will remain in thiscondition while the air through the pipe i is forming the water incompartment CL below the mouth of the pipe lc but thereupon thecompressed air enterv 'liquid compartments which are alternately emptiedinto a liquid delivery pipe and an aux-` iliary chamber containing amotorv whereby ing the pipe la will force the water out of the auxiliarychamber n, thus cause the iioat s to drop, open the valve q and findaccess to the cylinder h2 but not to the chamber t3 from which it is cutoff by the valve t. Now, the surface of the piston y2 within thecylinder h2 is so much greater than the surface of the piston j thatthe` pistons will be forced back again to the position shown in thedrawing and carry the valvej with them so as to shift the pressure backagain to the compartment a. Thereupon the auxiliaryT chamber nwill beagain lled with water, the oat s will be raised so as to cut thepressure off from the valve t and the position of the piston q2 is suchthat it exerts a pressure upon the valve stem a3 through the springe inantagonism to the spring o and sufficiently great to overcome the springo and throw the valve t back into the position shown in the drawing.

I claimy l. In a liquid raising apparatus having two liquid compartmentswhich are alternately emptied into a liquid delivery pipe and anauxiliary chamber containing a motor whereby access of compressed air tothe valve operating mechanism is controlled, the following parts incombination with the main valve, viz: two pistons of different diametersand a valve whereby the compressed air is alternately cut off from andadmitted to one side of one of said pistons thereby alternately changingthe balance of pressure upon said pistons, substantially as described.

2. In aliquid raising apparatus having two liquid compartments which arealternately emptied into aliquid delivery pipe and an auxiliary chambercontaining a motor whereby access of compressed air to the valveoperating mechanism is controlled, the following parts in combinationwith the main valve,

viz: 'two pistons, a valve whereby compressed air is alternately cut offfrom and admitted to one side of one of said pistons and a springwhereby said valve is shifted as said piston is moved in one direction,substantially as described.

3. In a liquid raising apparatus having two access of compressed airtothe `valve operating mechanism is controlled, the following parts incombination with the main valve, viz: two pistons, a valve wherebycompressed air is alternately cut off from and admitted to one side ofone of said pistons, a spring whereby said valve is shifted as saidpiston is moved in one direction and means, whereby as said piston ismoved in the opposite direction, pressure is exerted to move said valvein antagonism to said spring, substantially as described.

Signed at Bound Brook, in the county of Somerset and State of NewJersey, this 24th day of July, A. D. 1894. A

FRANK I-I. MERRILL.

Witnesses:

H. C. SUYDAM, L. GIFFORD.

